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    <title>texture - OpenGL ES 3 Reference Pages</title>
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    <div class="refentry" id="texture">
      <div class="titlepage"/>
      <div class="refnamediv">
        <h2>Name</h2>
        <p>texture — retrieves texels from a texture</p>
      </div>
      <div class="refsynopsisdiv">
        <h2>Declaration</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">gvec4 <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>gsampler2D <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec2 <var class="pdparam">P</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>[float <var class="pdparam">bias</var>]<code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">gvec4 <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>gsampler3D <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec3 <var class="pdparam">P</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>[float <var class="pdparam">bias</var>]<code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">gvec4 <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>gsamplerCube <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec3 <var class="pdparam">P</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>[float <var class="pdparam">bias</var>]<code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">float <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>sampler2DShadow <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec3 <var class="pdparam">P</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>[float <var class="pdparam">bias</var>]<code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">float <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>samplerCubeShadow <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec4 <var class="pdparam">P</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>[float <var class="pdparam">bias</var>]<code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">gvec4 <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>gsampler2DArray <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec3 <var class="pdparam">P</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>[float <var class="pdparam">bias</var>]<code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">float <strong class="fsfunc">texture</strong>(</code>
              </td>
              <td>gsampler2DArrayShadow <var class="pdparam">sampler</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>vec4 <var class="pdparam">P</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>sampler</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the sampler to which the texture from which texels will be retrieved is bound.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>P</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the texture coordinates at which texture will be sampled.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>bias</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies an optional bias to be applied during level-of-detail computation.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p>
            <code class="function">texture</code> samples texels from the texture bound to <em class="parameter"><code>sampler</code></em> at texture
            coordinate <em class="parameter"><code>P</code></em>. An optional bias, specified in <em class="parameter"><code>bias</code></em> is included in
            the level-of-detail computation that is used to choose mipmap(s) from which to sample.
        </p>
        <p>
            For <span class="emphasis"><em>shadow</em></span> forms, when <em class="parameter"><code>compare</code></em> is present, it is used as
            <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi>D</mml:mi><mml:mi>sub</mml:mi></mml:msub></mml:math>
            and the array layer is specified in <code class="code"><em class="parameter"><code>P</code></em>.w</code>. When <em class="parameter"><code>compare</code></em> is
            not present, the last component of <em class="parameter"><code>P</code></em> is used as
            <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi>D</mml:mi><mml:mi>sub</mml:mi></mml:msub></mml:math> and the
            array layer is specified in the second to last component of <em class="parameter"><code>P</code></em>.
        </p>
        <p>
            For non-shadow variants, the array layer comes from the last component of <em class="parameter"><code>P</code></em>.
        </p>
      </div>
      <div class="refsect1" id="versions">
        <h2>Version Support</h2>
        <div class="informaltable">
          <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
            <colgroup>
              <col style="text-align: left; "/>
              <col style="text-align: center; " class="firstvers"/>
              <col style="text-align: center; " class="lastvers"/>
            </colgroup>
            <thead>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; ">
                 
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; " colspan="2">
                <span class="bold"><strong>OpenGL ES Shading Language Version</strong></span>
            </th>
              </tr>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>Function Name</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>1.00</strong></span>
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.00</strong></span>
            </th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; ">texture</td>
                <td style="text-align: center; border-right: 2px solid ; ">-</td>
                <td style="text-align: center; ">✔</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p>
            <a class="citerefentry" href="texelFetch.xhtml"><span class="citerefentry"><span class="refentrytitle">texelFetch</span></span></a>,
            <a class="citerefentry" href="texelFetchOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">texelFetchOffset</span></span></a>,
            <a class="citerefentry" href="textureGrad.xhtml"><span class="citerefentry"><span class="refentrytitle">textureGrad</span></span></a>,
            <a class="citerefentry" href="textureGradOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">textureGradOffset</span></span></a>,
            <a class="citerefentry" href="textureLod.xhtml"><span class="citerefentry"><span class="refentrytitle">textureLod</span></span></a>,
            <a class="citerefentry" href="textureLodOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">textureLodOffset</span></span></a>,
            <a class="citerefentry" href="textureOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">textureOffset</span></span></a>,
            <a class="citerefentry" href="textureProj.xhtml"><span class="citerefentry"><span class="refentrytitle">textureProj</span></span></a>,
            <a class="citerefentry" href="textureProjGrad.xhtml"><span class="citerefentry"><span class="refentrytitle">textureProjGrad</span></span></a>,
            <a class="citerefentry" href="textureProjGradOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">textureProjGradOffset</span></span></a>,
            <a class="citerefentry" href="textureProjLod.xhtml"><span class="citerefentry"><span class="refentrytitle">textureProjLod</span></span></a>,
            <a class="citerefentry" href="textureProjLodOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">textureProjLodOffset</span></span></a>,
            <a class="citerefentry" href="textureProjOffset.xhtml"><span class="citerefentry"><span class="refentrytitle">textureProjOffset</span></span></a>,
            <a class="citerefentry" href="textureSize.xhtml"><span class="citerefentry"><span class="refentrytitle">textureSize</span></span></a>
        </p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright <span class="trademark"/>© 2011-2014 Khronos Group.
            This material may be distributed subject to the terms and conditions set forth in
            the Open Publication License, v 1.0, 8 June 1999.
            <a class="link" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
        </p>
      </div>
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